Together
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since 1997
INTECH GmbH
We are interested in cooperation with the manufacturers of drilling machines, who are looking for an official and reliable distributor to supply their equipment to the industrial plants in Russia.
The company’s top management and sales team are well acquainted with the Russian market, its mentality and laws; they also understand industrial specifics of the financial and economic activities of the Russian customers. All our sales managers have a large customer database, extensive experience of successful sales and well-established connections with the potential buyers of your drilling machines. This allows our managers to promptly set out the most promising directions for promotion and to ensure a rapid entry of the products into the promising Russian market. Our employees, who are fluent in English and German, are focused on working at the international market with the supplies of foreign equipment.
Our team of experienced engineers, who can handle the most serious technical problems, constantly keeps in touch with the Russian customers, holds meetings and delivers presentations regarding the latest achievements of our manufacturing partners. They point out the engineering challenges and actively communicate with all the departments at Russian plants. That is why the specifics of doing a business in the Russian Federation are well-known to us, and we also know the equipment of the local industrial plants and their up-to-date modernization needs.
Once we become your authorized representative in Russia, our marketing staff will carry out a market research in order to check the demand for drilling machines, will submit a market overview for drilling machines that you offer and evaluate the needs for this type of equipment at local plants. Our specialists will also estimate the potential and capacity of this market at local industrial plants. Our IT-team will start developing a website for your products in Russian. Our experts will assess the conformity between your drilling machines and customer needs as well as analyze the common reaction to the new goods in general. We will look into the categories of potential customers, and pick out the largest and the most promising plants.
Upon becoming your authorized agent on the territory of Russia, ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), will obtain certificates, if required, for a batch of the goods, for various types of drilling machines in compliance with Russian standards. We can also arrange the inspection in order to obtain TR TS 010 and TR TS 012 Certificates. These certificates provides permission to operate your equipment at all industrial plants of the EAEU countries (Russia, Kazakhstan, Belarus, Armenia, Kyrgyzstan), including the hazardous industrial facilities. Our company is eager to assist in issuing Technical Passports for drilling machines as per Russian and other EAEU countries’ requirements.
Our engineering company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), collaborates with several Russian design institutes in various industrial segments, which allows us to conduct preliminary design as well as subsequent design works according to the standards, construction rules and regulations that are applicable in Russia and other CIS countries. It also enables us to include your drilling machines into the future projects.
The Company has its own logistics department that can provide packing service, handling as well as the most efficient and cost effective mode of transportation of the goods (incl. over dimensional and overweight goods). The goods can be delivered on DAP or DDP-customer’s warehouse basis in full compliance with all the relevant regulations and requirements that are applicable on the Russian market..
Our company has its own certified specialists who will carry out installation supervision and commissioning of the delivered equipment, as well as further guarantee and post-guarantee maintenance of drilling machines. They will also provide necessary training and guidance for the customer’s personnel.
Drilling is a process, in which holes are cut in work pieces using a drill with rotational and progressive movements of the tool or the work piece itself. When drilling on standard drilling machines, the drill rotates and is fed along the axis.
When drilling on lathe or on special drilling machines, the work piece itself rotates. Drills are divided into twist, arrow-headed, pivot and special ones. The most common are spiral drills, which are made with a diameter of 0,25 - 80 mm. The side working surface of the drill has two helical flutes, forming the front face of the drill edges. Chips formed during drilling move along them.
Elements of the twist drill:
Geometrical characteristics of the twist drill:
Twist drills are commonly made of high-speed steel, but drills with plates of hard alloys are used as well.
Centering drills are used for drilling of centering holes in work pieces. These drills are combined and bilateral.
Arrow-headed drills have a working part in the form of a blade. These drills have the oldest structure and are the cheapest. The drills with plates of hard alloys have a diameter of 3 - 50 mm and are used for drilling of conventional and hard steel and chilled cast iron. To drill a deep hole in solid material, special drills are required, for example, a rifle or a gun. A gun drill is a tip and a bar of circular form welded to it with a smaller diameter.
Coolant is supplied through an internal cavity of the drill, and chips are discharged through the gap formed between the walls of a drilled hole and a longitudinal groove.
Gun drills have only one cutting edge formed by the front and rear surfaces. The rear angle is considered 8 - 100. When using such drills for hole drilling, axes’ run out is substantially smaller, but performance capacity decreases compared to double-edge drills. The reason is that it is necessary to drill by small feeds, there is a baffling of chip removal and coolant supply. For deep drilling of larger diameter holes, special drilling heads are used.
Elements and cutting forces during drilling
Cutting depth during drilling is assumed to be half of the drill diameter:
t = D/2
Cutting speed during drilling:
v = (Π·D·n)/1000, m/min
D is the drill diameter in mm,
n is a number of revolutions per min.
Feed during drilling:
S = s·n mm,
S is the feed per one revolution,
n is a number of revolutions per minute.
Boring of holes is a process, in which the existing holes are machined using drilling or reaming tools in order to enlarge their diameter. During boring, either the work piece to be machined or the tool can rotate. The feed motion is transmitted to the tool or to the work piece respectively.
Chisels and countersinks are used as boring tools, which are fixed in the boring bars during boring on a special boring machine. It is possible to bore holes using boring tool heads, which are a set of incisors in a head of diameter 50 - 200 mm. Chisels are made heavy-duty: from high-speed steel or solder plate of hard alloys.
In appearance countersinks are similar to drills, but they have increased rigidity and 3-4 cutting edges (3-flute, 4-flute). Three-flute countersinks have a diameter of maximum. 30 mm and four-flute countersinks and shell multi-flute drills are 100 mm in diameter. Mostly, countersinks are made of the high-speed steel, less often, they are made of carbon steel. They are equipped with plates of hard alloys. A countersink removes metal layer 2 - 6 mm thick; they are used for primary machining of rough holes in castings and forgings and to counterbore pre-drilled holes. Machining of work pieces with a countersink enables to obtain precision of the 4 - 5 class and the surface condition of the 4 - 6 class. To obtain a cylindrical recess, a countersink is equipped with a removable pin, and for conical recesses it is made with an angle of 60 degrees. Specialized companies use multi-diameter and spiral countersinks of various designs in order to increase productivity.
At the stage of rough machining of tapered conical holes, a multi-diameter countersink is used; and smooth tapered core drills are used for finishing.
Reaming is a process, in which holes are machined providing for a correct form, accuracy of dimensional parameters and preset finish characteristics of the machined surface, wherein removing quite a small layer of metal, 0.02 to 0.4 mm. Reamers are similar to countersinks, however, due to other purposes, they have a different design concept with the following differences:
Reamers are divided into hand and machine ones, and roughing and finishing ones. The machines, in their turn, can of a one-piece type with a diameter of 10-32 mm, or can be with push-in adjustable blades with a diameter of 20-150 mm.
To achieve high finish characteristics of the hole, multi-flute reamers with random distribution of teeth are often used. Single-flute reamers are used to finally calibrate holes with a diameter of 25 - 75 mm. To machine larger holes with a diameter of 80 - 200 mm, reamers with floating blades (two-edged) are used.
A reamer is guided by the hole walls; it freely moves in the hole, thus providing for self-centering due to floating chucks.
Tools for drilling and boring machines
Work tools are accessories to the machine, the purpose of which is as follows:
Work tools for drilling machines are jigs or, in other words, accessories with bushing for guiding a tool. Jigs can be of the following types:
Lay-on jig plates are self-explanatory: normally, they are laid on a work piece following preliminary centering on it: on respective surfaces of work pieces or composite centering components of the devices. Suspended jig plates are hung to the machine spindles or multi-spindle drill heads, descending with the spindle to the work piece surface or holder stock. Work piece machining using suspended jig plates can be automated.
Template pump jigs are used for many processing operations on the machines. They are made without drill bushings and without adjusting elements, while providing holes for them in the body of the jig.
Clamping jigs are the very same jaw plates, equipped with a screw or a rack and a pinion mechanism, and intended for machining of small work pieces, where a plate with drill bushing is located on one of the jaws.
Channel jigs are used for machining of large-scale work pieces transported by a roller conveyor. the work pieces are installed in the jig, often they are arranged by the plane and two holes that are located on this plane and carefully pre-processed. Centering, as a rule, is made by two pins.
Holes with precisely coordinated axes in body work pieces are bored on boring machines, which tools are fixed on a rotating spindle or on the faceplate. The work piece to be machined is mounted on a track-guided table or on a table device. The work piece is fed manually or mechanically.
In various mass productions, large diameter holes are bored on multi-spindle boring machines with boring heads.
In small-scale or individual productions, body work pieces are machined using general purposes horizontal boring machines, which produce drilling, reaming, thread cutting and milling of flat surface areas.
When producing certain components of machines, higher precision and finishing characteristics of machined holes are often needed, this can be provided by fine boring. This machining method is characterized by high speed during cutting, a small depth of cut up to 0.2 mm and a small pitch up to 0.1 mm. To perform these procedures, special cutters with plates of hard alloys are suitable. Fine boring machines are very rigid and accurate, their spindle speed is up to 6000 rpm, and they can be of single-spindle and multi-spindle types, where spindles are arranged horizontally and vertically.
Drilling machines belong to the type of equipment that is designed primarily for drilling of holes in work pieces made of any material. The holes may be through or dumb. They can be drilled in metal, wood, plastic products and other materials. Using drilling equipment, already existing holes can be expanded or further machined, discs can be cut out from sheet metal, and an internal thread can be сut. Hole finishing is also performed using drilling machines, it includes their counterboring and reaming, it is possible also to countersink end surfaces of work pieces.
To produce such operations additional types of equipment such as drills, core drills, reamers, taps and others are used. These are the tools of drilling equipment or machines.
The main action to perform drilling is a shape-generating motion consisting of rotational movement (considered to be the main), and forward motion of the tool. The latter is carried out on the axis.
Drilling machines are divided into:
Nowadays, a vertical drilling machine is the most popular and it is designed for drilling blind and through holes in the metal sheets, boring procedures, counterboring, reaming, and thread cutting. An integral work piece of a machine is a frame where headstock moves vertically; in the headstock, a spindle mounted, which is moved by an electric motor or by a flywheel manually, and gear box.
Radial drilling machines are used to machine holes in large-scale work pieces that cannot be performed on vertical drilling machines. Radial arm with a headstock rotates and moves vertically on a column; on the headstock, a gear box, feed box, electric motor and a spindle are located. The work piece to be machined is mounted on a removable table or on a base plate. Due to the rotation of the arm with moving headstock, the spindle can be summed with any tool to any work piece position.
Procedures performed on vertical drilling and radial drilling machines are as follows:
Desk-type drilling machines are used to drill holes in small work pieces. Machines of small footprint and simplified design are usually set in the plumbing workshops. For deep drilling horizontal machines with rotating spindle are used, which can be from one to four. The work piece to be machined is fixed to the spindle. Vertical machines with several spindles are suitable for the same purpose as well. Feed is transmitted to the cutting tool, not the work piece, on both types of machines. Such machines are usually equipped with powerful pumps supplying the coolant under high pressure, whereby the chips are washed appearing during drilling; the liquid is supplied into the drill and in between the walls of the hole.
Multi-spindle drilling machines used for serial processing of holes combine several vertical drilling machines with multi-headstocks on the same frame and with the same table. They are suitable for sequential processing of the work pieces with several tools located in separate spindles.
Modular multi-spindle machines process special work pieces, performing drilling, boring, reaming, thread cutting procedures on them, and placing them, as a rule, in the automatic line mills.
An important indicator of the functional advantages of the drilling equipment is the maximumimum diameter of the hole, which is drilled by a certain machine. In addition, any machine is characterized by spindle overhang and travel. The more the spindle travel, the more opportunities the machine possesses. Speed characteristics of a particular machine are not less important. Machine speed determines duration of operation, drilling machine is designed for.
Drilling machines have a wide range of application. They can be installed in the mechanical, assembly, repair workshops of large enterprises and plants, tools and machine-building and repair shops of transport, construction and agricultural organizations, educational institutions. Based on the scope of the drilling machines, they can be versatile and of a special purpose as well. To this end, machines can be equipped with multi-spindle drilling taps for drilling specific work pieces or cutting special threads. The process can be automated. Electrical, hydraulic devices can also optimize the machining processes.
There are many different types of drilling equipment, depending on the functionality, purpose, main processing operations, etc. Here are some of them: radial drilling machine, vertical drilling machines, horizontal boring machines, boring machines, desk-type drilling machines, CNC-controlled drilling machines, etc., are widely used in mechanical engineering and machine tool building.
Drilling machines are intended not only to perform the drilling functions. There is a number of functions involving additional technological capabilities in the holes machining.
Modern drilling machines, corresponding to the last state of the art, can be used, as it has already been mentioned, to drill through and blind holes, to increase the diameter of the already bored holes, to achieve a higher quality when drilling holes and better roughness that is provided by core drilling, make cylindrical and tapered holes, cut the internal thread of excellent quality.
The following Figure shows operations, performed by drilling equipment:
Drilling machines are used not only for making through or blind holes in a variety of materials, but also for production of female threads, core, cut pieces of sheet materials and for other drilling operations.
When using milling and drilling machines, milling, trimming, polishing, and other operations are performed. For these operations, such tools as countersinks, drills, taps, and others are used.
Depending on the purposes of the drilling machine, they can be special, special purpose and versatile machines. At the same time, special purpose drilling machines are used in mass production, which are manufactured by equipping versatile machines with a special-purpose drill tools and thread cutting heads and by automating of the work cycle.
Drawing of the drilling machine
Classification of drilling machines:
To identify drill model, letters and digits are used. The first digit in the model designation indicates the group to which the machine belongs, the second means the type, and the third and the fourth show the size of the machine or the work piece, which can be machined by it. If there is a letter after the first digit, it shows that the model of the machine is improved. If the letter is at the end of the title, it shows that specialized machine is made on the basis of the standard model.
Using special tools, one can perform boring, cutting bigger holes and many other kinds of works.
Drilling machines are used extensively. They are used in machine-building plants, small and medium-sized businesses for repair, assembly and other work. Reamers, drills and countering tools are used to machine holes on the drilling machines and taps are used for thread cutting.
During the holes machining, shape-generating motions performed on the machines are reciprocating motions when feeding a tool, as well as the rotational movement of the tool itself.
To fix the work piece rigidly on the machine table and to position the tool more precisely in relation to the site to be machined, different types of devices are used, among which screw and pneumatic vise, supports, angle-plates, jigs, vacuum clamps and other devices are the most frequently applied.
Vises are widely used both in mass production and in individual order.
The above mentioned jigs also have been widely used for the precise fixing of a machined work piece on the bore axis.
Applying of jigs and jig boards or plates eliminates the need to do layout, to mark center holes, clearly position and align the work piece when holding, and it also reduces the physical effort and the effort of maintenance personnel. They found a special use in many areas of series production. Jig plates of various designs are fixed to jig housing.
There are jig plates, which are permanently fixed to the jig by weld or screw connections. They can rotate, making it easy to install or remove the work pieces. Removable plates, in contrast to the constantly fixed on the jig plates, are available separately, and they are removed from the jig after finishing work pieces or billets.
Another device for a drilling machine is a multi-spindle drilling head. These devices provide for the machine to operate much more intense and increase its productivity. One multi-spindle head can perform multiple manipulations, involving machining of several holes simultaneously.
Floor mounted drilling machines are versatile equipment used for boring, drilling, reaming, thread cutting and counterboring. This equipment is used for machining of various kinds of metal.
In practice, this equipment is used on each metal-working or specialized enterprise. Its main advantages are convenient and simple operation, low cost, as well as reliability and durability. These specifications are optimal for this type of units.
If we compare the floor mounted drills with other units of this type, they have the best quality of work pieces machining and a wide range of applications. These machines are equipped with a rotary table and a further round column, where drilling heads move.
The main characteristics of the drilling equipment is the size of the working surface, type of spindle taper and the distance between the spindle nose and a plate.
Desk-type drilling machines process small-sized work pieces from different materials, preferably drill holes and cut threads in them. Desk-type drilling machines are installed in repair shops of small businesses, educational institutions, municipal and home workshops, and are used for personal purposes.
The machine’s design is simple, it is easy to maintain and stable, which ensures its long-term lifetime. Desk-type machines can perform a set of standard operations as drilling, countersinking, reaming, boring and thread cutting. A desk-type drilling machine spindle while rotating at a maximumimum speed can machine small-diameter holes.
Upon becoming the official distributer of drilling machines, our company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), carries out the following: finds the buyers of your products on the market, conducts technical and commercial negotiations with the customers regarding the supplies of your equipment, concludes contracts. Should a bidding take place, we will collect and prepare all the documents required for the participation, conclude all the necessary contracts for the supply of your equipment, as well as register the goods (drilling machines) and conduct customs clearance procedures. We will also register a certificate of transaction (Passport of Deal) required for all foreign trade contracts in the foreign currency control department of the authorized Russian bank so that currency transaction could be effected. If required, our company will implement an equipment spacing project in order to integrate your equipment into the existing or newly built production plant.
We are convinced that our company ‘Intech GmbH’ LLC (ООО «Интех ГмбХ»), will become your reliable, qualified and efficient partner & distributor in Russia.
We are always open for cooperation, so let’s move forward together!
